CA2076115A1 - Liquid removal apparatus and method for wood pulp - Google Patents

Liquid removal apparatus and method for wood pulp

Info

Publication number
CA2076115A1
CA2076115A1 CA002076115A CA2076115A CA2076115A1 CA 2076115 A1 CA2076115 A1 CA 2076115A1 CA 002076115 A CA002076115 A CA 002076115A CA 2076115 A CA2076115 A CA 2076115A CA 2076115 A1 CA2076115 A1 CA 2076115A1
Authority
CA
Canada
Prior art keywords
dewatering
pulp
pressure
deposited
pulp slurry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002076115A
Other languages
French (fr)
Other versions
CA2076115C (en
Inventor
Reijo K. Salminen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
21st Century Pulp & Paper LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2076115A1 publication Critical patent/CA2076115A1/en
Application granted granted Critical
Publication of CA2076115C publication Critical patent/CA2076115C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/80—Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/09—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with filtering bands, e.g. movable between filtering operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B01D29/684—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a translatory movement with respect to the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/78—Handling the filter cake in the filter for purposes other than for regenerating for washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
    • B01D29/82—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression
    • B01D29/824—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression using pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
    • B30B9/10—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams without use of a casing
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • D21C9/06—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents in filters ; Washing of concentrated pulp, e.g. pulp mats, on filtering surfaces
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/40—Washing the fibres

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

A pulp dewatering and washing apparatus comprising a pressure vessel in which is contained a table assembly having a foraminous surface, in the form of a conveying belt, on which a pulp slurry is deposited.
A differential pressure chamber in the table assembly is vented to a lower pressure location to cause a pressure differential across the pulp slurry to cause dewatering.
Also, wash water is deposited on the dewatered pulp in sequential cycles to accomplish washing. A contact plate is provided to press the pulp slurry to aid in dewatering. The conveying belt of the table assembly on which the pulp slurry is deposited is stationary during the dewatering and washing, and then after the pressure differential between the vessel and the pressure differential chamber is reduced to zero, the conveyor belt moves the dewatered and washed slurry to a discharge location.
CA002076115A 1991-08-21 1992-08-13 Liquid removal apparatus and method for wood pulp Expired - Lifetime CA2076115C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US74827191A 1991-08-21 1991-08-21
US748,271 1991-08-21
US898,944 1992-06-11
US07/898,944 US5482594A (en) 1991-08-21 1992-06-11 Liquid removal apparatus and method for wood pulp

Publications (2)

Publication Number Publication Date
CA2076115A1 true CA2076115A1 (en) 1993-02-22
CA2076115C CA2076115C (en) 2006-01-24

Family

ID=27114905

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002076115A Expired - Lifetime CA2076115C (en) 1991-08-21 1992-08-13 Liquid removal apparatus and method for wood pulp

Country Status (12)

Country Link
US (1) US5482594A (en)
EP (1) EP0662170B1 (en)
AR (1) AR246324A1 (en)
AT (1) ATE180025T1 (en)
AU (1) AU2407092A (en)
BR (1) BR9203309A (en)
CA (1) CA2076115C (en)
DE (1) DE69229184D1 (en)
FI (1) FI109547B (en)
NO (1) NO303233B1 (en)
SE (1) SE515753C2 (en)
WO (1) WO1993004233A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6405696A (en) * 1995-06-29 1997-01-30 Reijo K. Salminen Continuous digester
US6036726A (en) * 1995-10-27 2000-03-14 Solutia Inc. Process for separating polyamide from colorant
US6083283A (en) * 1996-10-24 2000-07-04 Solutia Inc. Method for removing color from ionically dyeable polymeric materials
US6217781B1 (en) 1998-05-05 2001-04-17 Russell B. Hobson, Jr. Applications for slack filter tube with tensioning means
US6309552B1 (en) 1998-05-05 2001-10-30 Russell B. Hobson, Jr. Slack filter tube having an internal resilient support extending there through
US6051138A (en) * 1998-05-05 2000-04-18 Hobson, Jr.; Russell B. Slack filter tube with tensioning means
US6521135B1 (en) * 1999-01-19 2003-02-18 Steve C. Benesi Filtration apparatus operation features
FI112957B (en) 1999-07-21 2004-02-13 Metso Paper Pori Oy Method and apparatus for washing pulp
DE19951794A1 (en) * 1999-10-27 2001-05-03 Voith Paper Patent Gmbh Method and device for dewatering a fibrous web
US6395132B1 (en) * 2000-02-24 2002-05-28 Voith Sulzer Paper Technology North America, Inc. Washing system and washer for a fiber suspension
ATE354416T1 (en) * 2001-12-28 2007-03-15 Univ Danmarks Tekniske FILTRATION METHOD AND APPARATUS
US7651619B2 (en) * 2001-12-28 2010-01-26 Danmarks Tekniske Universitet (Dtu) Filtration method and apparatus
SE0202733D0 (en) * 2002-09-16 2002-09-16 Skogsind Tekn Foskningsinst Process and arrangement for replacing fluid in fibers with a replacement fluid
US7011741B2 (en) * 2003-02-14 2006-03-14 Benesi Steve C Filtration apparatus operating features
FI122775B (en) * 2004-09-07 2012-06-29 Andritz Oy Apparatus and method for treating pulp
US7631681B1 (en) 2007-02-13 2009-12-15 David Petersen Tire-rim separation device
US8673156B2 (en) * 2008-10-02 2014-03-18 Gryphon Environmental, Llc Suspension liquid extraction apparatus and method
DE102009054076B8 (en) * 2009-11-20 2012-07-05 Erwin Junker Maschinenfabrik Gmbh Method for separating abrasive oil from abrasive slurries; Separation station for carrying out the method and process plant
CA2959851A1 (en) 2016-03-03 2017-09-03 Recover Energy Services Inc. Gas tight shale shaker for enhanced drilling fluid recovery and drilled solids washing
US10471373B2 (en) * 2017-08-11 2019-11-12 Vahid Atharinia Water disinfection method and apparatus
CN113234514A (en) * 2021-05-29 2021-08-10 中国矿业大学 Dewatering and quality improving system for high-water-content materials
CN114237107B (en) * 2021-12-09 2023-11-14 浙江华章科技有限公司 Maintenance method for valve of dilution water flow box

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI25895A (en) * 1949-05-09 1952-08-11 Washing machine for cellulose or similar pulp
SE312269B (en) * 1964-12-17 1969-07-07 T Aremaa
GB1287605A (en) * 1968-09-18 1972-09-06 Sunds Ab Improvements in or relating to the treatment of a material with a liquid
US3922298A (en) * 1969-07-29 1975-11-25 Upjohn Co 3-Oxa prostaglandin B-type compounds
US3970552A (en) * 1974-08-30 1976-07-20 Klockner-Humboldt-Deutz Aktiengesellschaft Method and means for separation of liquids from a mixture of solids and liquids
US4233157A (en) * 1977-11-23 1980-11-11 Miller Peter A Travelling sheet, flat-bed filter apparatus and system
US4154644A (en) * 1978-02-27 1979-05-15 Georgia-Pacific Corporation Pulp washer
AU1230383A (en) * 1982-03-11 1983-09-15 Klockner-Humboldt-Deutz Aktiengesellschaft Pressure band filter
FI80386C (en) * 1988-05-06 1990-06-11 Valmet Paper Machinery Inc Filtration method and apparatus for use in the process
US5209841A (en) * 1991-09-27 1993-05-11 Bratten Jack R Filter belt arrangement for pressurized chamber filter

Also Published As

Publication number Publication date
FI923610A7 (en) 1993-02-22
NO303233B1 (en) 1998-06-15
WO1993004233A1 (en) 1993-03-04
CA2076115C (en) 2006-01-24
SE9202396D0 (en) 1992-08-20
US5482594A (en) 1996-01-09
BR9203309A (en) 1993-04-06
FI923610A0 (en) 1992-08-12
AR246324A1 (en) 1994-07-29
FI109547B (en) 2002-08-30
AU2407092A (en) 1993-03-16
EP0662170B1 (en) 1999-05-12
SE515753C2 (en) 2001-10-08
EP0662170A1 (en) 1995-07-12
DE69229184D1 (en) 1999-06-17
NO923224L (en) 1993-02-22
NO923224D0 (en) 1992-08-18
SE9202396L (en) 1993-02-22
ATE180025T1 (en) 1999-05-15

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202